Using classic Outlook for Windows in business environments
I am running Outlook 2019. Your fix sounded like it would be safer than editing the registry, so I thought I'd give it a shot.
I tried following your instructions to edit the 3 file names associated with each of my old signatures. I immediately got this error message when trying to save the very first signature:
"If you rename this file it will no longer belong to the folder 'foldername for that signature.' To rename it safely, save it with a new name and then delete the folder 'foldername for that signature.'"
Did you run into this problem and if so, what did you do and what was the result?